AP BIOLOGY

Detailed explanation-1: -Recombination of genes in the gametes is a result of crossing over, leading to variations among the offspring. Both of these events occur in prophase 1 of meiosis 1 in eukaryotes.

Detailed explanation-2: -The term used for crossing over is recombination. Recombination can occur between any two genes on a chromosome, the amount of crossing over is a function of how close the genes are to each other on the chromosome.

Detailed explanation-3: -In general recombination (also known as homologous recombination), genetic exchange takes place between a pair of homologous DNA sequences. These are usually located on two copies of the same chromosome, although other types of DNA molecules that share the same nucleotide sequence can also participate.

Detailed explanation-4: -Chromosomal crossover, or crossing over, is the exchange of genetic material during sexual reproduction between two homologous chromosomes’ non-sister chromatids that results in recombinant chromosomes.